Study Questions for the Relationship between Δ r Gº, Δ r G, Q, and K 1) For a particular reaction at a particular temperature, how many values can Δ r Gº have? Then how many values can K have for the same reaction? 2) Is the value of Δ r Gº a function of the concentrations (activities) or pressures (fugacities) of reactants or products? Then can the value of K a function of these quantities? 3) How does Q differ from K? 4) The value of Q can range from _____(no reactants present) to _____ (no products). 5) The units of Q are __________. The units of K are __________. 6) Given a value of K and Q, we can determine which way a reaction needs to shift to reach equilibrium (Circle one): Q < K reaction needs to shift to ( reactants / products ) to reach equilibrium. Q > K reaction needs to shift to ( reactants / products ) to reach equilibrium. 7) What is the meaning of ξ in the first definition of Δ r G on the previous page?
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